TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
FEATHER PROPELLER [1 record]
Record 1 - internal organization data 2008-02-20
Record 1, English
Record 1, Subject field(s)
- Aircraft Propulsion Systems
- Helicopters (Military)
- Special-Language Phraseology
Record 1, Main entry term, English
- feather the propeller
1, record 1, English, feather%20the%20propeller
correct, verb
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 OBS
"Feathering" a propeller means rotating the propeller blades about 90 degrees so each blade is streamlined with the wind, which gives minimum drag. 2, record 1, English, - feather%20the%20propeller
Record number: 1, Textual support number: 2 OBS
A feathering propeller can alter the pitch of the blades up to almost 90 degrees. That is, the blade pitch is changed so that they have their leading edge pointing right into the direction of flight, offering minimum resistance to the airflow. This mode allows the propeller rotation to be stopped, without adding excessive drag to the aircraft. Feather may be used to improve the performance of the aircraft after the failure of an engine, but more usually in light aircraft it is used in motor glider applications. 3, record 1, English, - feather%20the%20propeller
Record 1, French
Record 1, Domaine(s)
- Propulsion des aéronefs
- Hélicoptères (Militaire)
- Phraséologie des langues de spécialité
Record 1, Main entry term, French
- mettre l'hélice en drapeau
1, record 1, French, mettre%20l%27h%C3%A9lice%20en%20drapeau
correct, officially approved
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Le calage des pales peut être augmenté ou diminué pour adapter l'incidence de la pale à la vitesse de vol, pour fournir plus de force à vitesse faible (en montée), ou moins de force à plus grande vitesse (en croisière). En cas de panne du moteur, les pales peuvent être orientées de manière à offrir la moindre résistance au vent et ne pas créer de traînée. On parle alors de mettre l'hélice en drapeau. Pour un pas donné, le calage angulaire du profil va en décroissant en s'éloignant du centre, car la vitesse locale augmente avec le rayon, d'où l'aspect vrillé de l'hélice. 2, record 1, French, - mettre%20l%27h%C3%A9lice%20en%20drapeau
Record number: 1, Textual support number: 1 OBS
mettre l'hélice en drapeau : terme uniformisé par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Maintenance. 3, record 1, French, - mettre%20l%27h%C3%A9lice%20en%20drapeau
Record 1, Spanish
Record 1, Textual support, Spanish
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© Public Services and Procurement Canada, 2025
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
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